Nut and bolt assembly



FIG. 1 is a front view of the device.

FIG. 2 is a left side view of the device.

FIG. 3 is a top view of the device.

FIG. 4 is a bottom view of the device; and,

FIG. 5 is a perspective view of the nut and bolt assembly. 

The ornamental design for nut and bolt assembly, as shown and described. 